tomduff.com: Item Home About Index Old News Contact rss
US Patent Number 6,483,514 td Mon Jan 1 11:12:25 2007
My patent, Motion blurring implicit surfaces, issued on November 19, 2002. I learned about it, not from the US Patent and Trademark Office, but from US Patent Certificate, Inc., who sent me a letter asking if I'd like to buy a nice commemorative plaque.